This happens intermittently, but when it does, it's rage-inducing. Basically, her ship will go into cloak normally, but sometimes, she'll completely skip the charging portion of the Thalaron attack and just unleash it at full power as soon as she de-cloaks, which instantly kills everyone on Elite. This needs to be patched as soon as possible.
@Kali-fal and @S.J.Brex can vouch for me on this. I'm sure we're not the only ones that have encountered it.